Two former Parramatta Eels players are accused of harbouring semi-automatic weapons and possessing more than half-a-million dollars in cash after dramatic arrests in Sydney's Centennial Park yesterday.

Prince Harry farewells Sydney before visiting injured friend

Prince Harry has marked his final day of his month-long tour of duty in Australia by thanking the public outside the Sydney Opera House, before spending some quality time with an old Army friend being treated for a cause close to his heart.

British Lieutenant Ali Spearing is at the Macquarie University Hospital receiving specialist treatment to fit prosthetic legs after he was badly wounded in Afghanistan in 2011.

Today Prince Harry dropped by the hospital to say hello to the hard-working staff and catch up with his old Army friend.

“He is over the moon and thrilled to bits to be up and moving on a new set of legs, what they're doing over her is absolutely amazing,” Prince Harry said.

Earlier, thousands of fans gathered at the Opera House to greet Captain Wales and say farewell as he prepares to return home and meet his newborn niece.

The royal arrived at the Sydney Opera House by boat around 12.40pm (AEST) where close to 1500 royal fans had gathered.

Decked out in an army uniform, the prince was greeted by NSW Premier Mike Baird.

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Harry then walked up to the steps of the Opera House where he greeted primary school students and moved along the waiting crowd, shaking hands, posing for photos and chatting with excited fans.

Prince Harry delighted crowds with one ambitious fan even stealing a kiss from the bachelor prince.

Self-described "royal tragic" Victoria McRae made headlines before with her bid to steal the prince's heart, and she might be one step closer to her dream after the amorous interaction.

Coaxing him towards her with a sign which screamed, "Marry me, last chance, Harry", the prince obliged with some chatter before she made a move to plant a kiss on his cheek. The royal quickly pulled back with a smile.

“I said I would be happy with just a kiss and so he let me kiss him on the cheek and I went for it and the rest is history,” she told 9NEWS.

After departing in Sydney, Prince Harry will fly to New Zealand for a week-long stay, with planned visits to Stewart Island, Christchurch, Auckland and Wellington, as well as Whanganui on the north island where he will travel across the Whanganui river with local Maoris.

He will also meet serving members of the New Zealand Defence Force during a visit to Linton Military Camp, just south of Palmerston North.

He is expected to return home to the UK on May 17.

The royal will no doubt be eager to meet his newborn niece, Princess Charlotte.

The Duke and Duchess of Cambridge have retreated to the countryside in Norfolk with their new baby and her older brother, Prince George.